NUREG-1537, Part 2 - NRC

4 REACTOR DESCRIPTION-
This chapter gives guidance for evaluating the description in the SAR of the
reactor and how it functions as well as the design features for ensuring that the
reactor can be safely operated and shut down from any operating condition or
accident assumed in the safety analysis. Information in this chapter of the SAR
should provide the design bases for many systems and functions discussed in other
chapters of the SAR and for many technical specifications. The systems that
should be discussed in this chapter of the SAR include the reactor core, reactor
tank, and biological shield. The nuclear design of the reactor and the way systems
work together are also addressed. In this chapter the applicant should explain how
the design and proper operation of a non-power reactor make accidents extremely
unlikely. This chapter of the SAR along with the analysis in Chapter 13, "Accident
Analyses." should demonstrate that even the consequences of the design-basis
accident woud not cause unacceptable risk to the health and safety of the public.
4.1 Summary Description
This section of the SAR should contain a general overview of the reactor design
and important characteristics of operation. The reiviewer need not make any
specific review findings for this section. The detailed discussions, evaluations, and
analyses should appear in the following sections of the SAR.
This section'should contain a brief discussion ofthe-principal safety considerations
in selecting the reactor type and the way the facility design principles achieve the
principal safety considerations. Included should be summaries for the'items
requested in this section of the format and content guide and descriptive text,
summary tables, drawings, and schematic diagrams.
4.2 Reactor Core
This section of the SAR should contain the design information on all components
of the reactor core. The information should be presented in diagrams,'drawings,
tables of specifications, and text and analysis sufficient to give a clear
understanding of the core components and how they constitute a functional nonpower
reactor that could be operated anid shut down safely. Because radiation is
one of the essential products frorianon-f6wer reactor, a principal design
objective is to safely obtain the highest neution flux densities in experimental
facilities.
By reviewing this section, the reviewer gains anjfoverview of the reactor core
design and assurance that the SAR describes aMcomplete. operable non-power
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